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Home >> Acura >> 2014 >> RDX AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System & Engine Mechanical - Testing & Troubleshooting >> Inspection/Adjustment >> Valve Clearance Adjustment (2013-15) >> Adjustment

Valve Clearance Adjustment (2013-15): Adjustment

NOTE:  Connect the HDS to the DLC, and monitor ECT SENSOR 1. Adjust the valve clearance only when the engine coolant temperature is less than 100 °F (38 °C).

  1. Cylinder Head Cover - Remove
      1. Remove the cylinder head covers .
  2. Valve Clearance - Adjustment
    GHH72893Courtesy of HONDA, U.S.A., INC.
    1. Set the No. 1 piston at top dead center (TDC). Align the pointer (A) on the front upper cover with the No. 1 piston TDC mark (B) on the front camshaft pulley.
    REAR 
    GHH72894GHH72895Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.

    FRONT 

    GHH72894GHH72895Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.
    2. Select the correct feeler gauge for the valve clearance you are going to check.
    Valve Clearance 
    Intake:  0.20-0.24 mm (0.008-0.009 in)
    Exhaust:  0.28-0.32 mm (0.011-0.012 in)
    INTAKE 
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    EXHAUST 

    GHH72896GHH72897Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.
    3. Insert the feeler gauge (A) between the adjusting screw and the end of the valve stem on the No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag.
    INTAKE 
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    EXHAUST 

    GHH72898GHH72899Courtesy of HONDA, U.S.A., INC.HONDA, U.S.A., INC.
    4. If you feel too much or too little drag, loosen the locknut, and turn the adjusting screw until the drag on the feeler gauge is correct

    5. While holding the adjusting screw with the screw driver, tighten the locknut, then recheck the clearance. Repeat the adjustment, if necessary.

    Specified Torque 
    No. 1, No. 2, No. 3, and No. 4 cylinders: 
    20 N.m (2.0 kgf.m, 15 lbf.ft) 
    Apply new engine oil to the nut threads. 
    No. 5 and No. 6 cylinders: 
    14 N.m (1.4 kgf.m, 10 lbf.ft) 
    Apply new engine oil to the nut threads. 
    GHH72900Courtesy of HONDA, U.S.A., INC.
    6. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 4 piston TDC mark (B) on the front camshaft pulley

    7. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.

    GHH72901Courtesy of HONDA, U.S.A., INC.
    8. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 2 piston TDC mark (B) on the front camshaft pulley

    9. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.

    GHH72902Courtesy of HONDA, U.S.A., INC.
    10.Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 5 piston TDC mark (B) on the front camshaft pulley

    11. Check and, if necessary, adjust the valve clearance on the No. 5 cylinder.

    GHH72903Courtesy of HONDA, U.S.A., INC.
    12.Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 3 piston TDC mark (B) on the front camshaft pulley

    13. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.

    GHH72904Courtesy of HONDA, U.S.A., INC.
    14.Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 6 piston TDC mark (B) on the front camshaft pulley

    15. Check and, if necessary, adjust the valve clearance on the No. 6 cylinder.

  3. Cylinder Head Cover - Install
      1. Install the cylinder head covers .